Javelin

ABSTRACT

The invention relates to a javelin, especially for use in an indoor arena, which is essentially comprised of a shaft ( 2 ) whose javelin tip ( 3 ) is blunt and which comprises a hand grip ( 4 ) that is situated in the proximity of the center-of-gravity of the javelin. The shaft ( 2 ) is constructed as a core which is enclosed by a sheathing ( 7 ) made of a elastic material.

DESCRIPTION

The Invention relates to a javelin, in particular for employment in agymnasium hall, essentially comprising out of a shaft, where the pointof the javelin of the shaft is formed plant and wherein the shaftexhibits a handle near the center of gravity of the shaft.

Regular javelins for sports purposes exhibit a tipped point of ajavelin, wherein the regular javelins penetrate into the floor with thetipped point and remain stuck. These javelins are therefore not suitableto be employed in a gymnasium hall.

A javelin for training purposes is known in addition from the printedpatent document WO 98/18400, wherein the javelin exhibits a dull pointof a javelin, wherein the dull point of javelin is disposed at the frontend of a staff. The staff exhibits three radially disposed sterilizationfins at the rear end of the javelin. A handle, the so-called winding, isdisposed between the point of the javelin and the end of the javelin.This training javelin is to serve specially the training in the javelinthrowing of young trainees. The individual components of the trainingjavelin are made of a plastic material.

It is a disadvantage in connection with the known javelin, that thejavelin is lighter and smaller as are the usual competition javelins.According to one embodiment the known javelin has a length which is lessthan half the length of a competition javelin. In addition thecompetition javelins do not exhibit any stabilization fins.

In fact the training with this javelin is possible also in a gymnasiumhall, but the training does not correspond however to the circumstancesof a training with a competition javelin.

Thus this javelin is thrown with a clearly steeper angle as compared toa competition javelin.

Therefore it is an object of the present Invention to develop a javelin,which is on the one hand suitable for employment in a gymnasium hall andwhich on the other hand is substantially adapted to a competitionjavelin.

This object is accomplished in accordance with the present Invention byhaving the shaft made as a core, wherein the core is jacketed by ajacket made of an elastic material.

The javelin can be employed in a gymnasium hall by having the shaftjacketed with an elastic material. Without that, the javelin damages thefloor of the gymnasium hall upon impingement onto the floor of thegymnasium hall.

According to a preferred embodiment of the Invention, the shaft isjacketed with a front jacket in the front region comprising the point ofthe javelin. The javelin is jacketed with the rear jacket in the rearregion comprising the end of the javelin and disposed relatively remotefrom the point of the javelin.

It is possible to employ a conventional handle by having the jacketformed out of two parts, that is out of a front jacket and out of therear jacket. In addition it is easier to attach the jacket at the shaftor, respectively at the core of the shaft.

According to a further preferred embodiment of the Invention, the jacketor, respectively, the front jacket and the rear jacket are formed out ofa foam material.

A particular soft jacket can be obtained by employing a foam material,wherein the soft jacket saves the floor of the gymnasium hall uponimpingement and impact.

According to another preferred embodiment of the Invention, the jacketis formed out of a foamed rubber. The elastic properties of foamedrubber are also suitable to avoid damaging the floor of the gymnasiumhall upon impact of the javelin.

According to a further preferred embodiment of the Invention, the coreis formed as a wood core.

It is possible to furnish substantially the weight and the dimensions ofa usual competition javelin to the javelin.

It is further possible to form the core of the javelin as a plastic coreor, respectively, as a fiber reinforced plastic core.

According to further preferred embodiment of the Invention, the point ofthe javelin is connected disengageably to the shaft. The point of thejavelin is formed out of an elastic material at the free end of thepoint of the javelin disposed relatively remote to the shaft.

It is for example possible to form the front jacket like a tube and toslide the front jacket over the core based on the disengageableconnection of the point of the javelin. In the following the frontjacket can be fixed in its position by a connection of the point of thejavelin with the core at the shaft or, respectively, with the core. Incase of reviews of the javelin outdoors, it is additionally possible toexchange the elastic dull point of the javelin against a tipped point ofthe javelin.

According to further preferred embodiment of the Invention, the end ofthe javelin is disengageably connected to the shaft and the end of thejavelin and formed at its free end disposed relatively remote to theshaft out of an elastic material.

For example, the rear jacket between the handle and the end of thejavelin can be fixed to the shaft by attaching of the end of thejavelin.

According to a further preferred embodiment of the Invention, the pointof the javelin is furnished with a hollow chamber, wherein the hollowchamber is connected to openings disposed at the surface of the point ofthe javelin. The hollow chamber can be filled with a dye, wherein thedye exit is out of the openings upon impact of the javelin on the floor.

It is relatively simple to determine the location of impact of thejavelin based on the dye exiting from the point of the spear.

Further details of the Invention result from the following detaileddescription and the accompanying drawings, wherein preferred embodimentsof the Invention are illustrated by way of example in the drawings.

DETAILED DESCRIPTION OF THE DRAWING

FIG. 1: a top planar view onto a javelin,

FIG. 2: a side view of the front region of the javelin of FIG. 1 in asection,

FIG. 3: a side of the javelin of FIG. 1 in section in the area of thehandle,

FIG. 4: a side view in section of the rear region of the javelin of FIG.1,

FIG. 5: a front region of a javelin in section with the point of ajavelin formed at the javelin, and

FIG. 6: a side view of a front region of a shaft with a hollow chamberfor receiving of dye in the point of the javelin in the section.

A javelin 1 comprises essentially a shaft 2, a point of a shaft 3, ahandle 4 and an end 5 of the javelin.

The shaft 2 comprises a core 6, wherein the core 6 is jacketed by ajacket 7 made of an elastic material. Also a natural caoutchouc materialor an artificial caoutchouc material can be employed. For example alsofoamed rubber is suitable.

The jacket 7 comprises a front jacket 9 in a front region 8 disposedtoward the point 3 of the javelin and a rear jacket 11 in a rear region10 disposed toward the end 5 of the javelin.

The core 6 is formed as a wood core. It is however also possible to formthe core as a plastic core. It is further in principal possible to formthe core out of a metal.

The handle 4 is disposed between the front region 8 and the rear region10 about the area of the center of gravity. The handle is attachedthrough a grip sleeve 12 at the core 6. A grip cord 13 is disposed onthe grip sleeve 12, wherein the grip cord 13 forms the gripping areaproper.

It is in principle also possible to dispense with the grip sleeve and toform the jacket 7 throughout over the shaft. The gripping cord 13 canthen be placed directly onto the jacket 7.

The point 3 of the javelin is disengageably connected to the shaft 2through a thread as it is also the end 5 of the javelin. The point 3 ofthe javelin at its free end 14 disposed relatively remote to the shaft 2is formed out of an elastic material. The end 5 of the javelin at thefree end 15 disposed relatively remote to the shaft is also made of anelastic material. The front jacket 9 is disposed between the point 3 ofthe javelin and the handle 4. The rear jacket 11 is disposed between thehandle and the end 5 of the javelin.

According to another embodiment the tip 3′ of the spear is a solidlyconnected to the core 6′. The tip 3′ of the spear is also jacketed bythe jacket 7′.

According to further embodiment of the disengageable point 3″ of thejavelin exhibits a hollow chamber 16, wherein the hollow chamber 16 isconnected to openings 17 disposed at the surface of the point 3″ of thejavelin through channels 18. The point 3″ on the end disposed relativelyclose to the shaft exhibits a filling channel 19 for filling of thehollow chamber 16.

The front jacket 9 is slid over the front region 8 of the shaft 2 or,respectively, of the core 6 for assembly of the javelin 1 such that thefront jacket 9 contacts with the end of the front jacket 9 disposedrelatively remote to the point 3 of the javelin against the handle 4.The front jacket 9 is fixed between the handle or, respectively, thegrip support 12 of the handle and the point 3 of the javelin by screwingin of the point 3 of the javelin into the core 6.

The rear jacket 11 is the slid over the rear region 10 of the shaft 2or, respectively, of the core 6 such that the end of the rear jacket 11disposed remote relatively to the end of the javelin contacts againstthe handle 4. The rear jacket 11 is fixed on the core 6 by screwing inof the end 5 of the javelin into the core 6.

What is claimed is:
 1. Javelin, in particular to be employed in agymnasium hall, essentially comprising a shaft, wherein the point of thejavelin is formed blunt and wherein the javelin exhibits a handle in theneighborhood of the center of gravity of the javelin, characterized inthat the shaft (2) is formed as a core (6,6′), wherein the core (6,6′)is jacketed by a jacket (7,7′) made of an elastic material, wherein thepoint (3″) of the javelin exhibits a hollow chamber (16), wherein thehollow chamber (16) is connected to openings (17) disposed at thesurface of the point (3″) of the javelin.
 2. Javelin according to claim1 characterized in that the shaft (2) is jacketed by a front jacket(9,9′) in a front region (8) comprising the point (3,3′,3″) of thejavelin.
 3. Javelin according to claim 1 characterized in that the shaft(2) is jacketed in a rear region (10) comprising an end (5) of thejavelin disposed relatively remote to the point (3,3′, 3″) of thejavelin with a rear jacket (11).
 4. Javelin according to claim 1,characterized in that the jacket (7,7′, 9,9′, 11) is formed out of acaoutchouc.
 5. Javelin according to claim 1, characterized in that thejacket (7,7′, 9,9′, 11) is formed out of a foamed rubber.
 6. Javelinaccording to 1, characterized in that core (6,6′) is formed as a plasticcore.
 7. Javelin according to claim 1, characterized in that the jacket(7,7′, 9,9′, 11) is removable.
 8. Javelin according to claim 1,characterized in that the end (5) of the javelin is connecteddisengageably to shaft (2).
 9. Javelin according to claim 1,characterized in that the end (5) of the javelin is screwable to theshaft (2).
 10. Javelin according to claim 1, characterized in that thefront jacket (9) is disposed between the point (3,3″) of the javelin andin the handle (4).
 11. Javelin according to claim 10 characterized inthat the rear jacket (11) is disposed between the handle (4) and the end(5) of the javelin.
 12. Javelin according to claim 1 characterized inthat the hollow chamber (16) is fillable with a dye, wherein the dyeexits upon impact of the shaft 2 on the floor.
 13. Javelin according toclaim 12 characterized in that the dye is formed as a powder. 14.Javelin according to claim 1, characterized in that the core is formedas a metal core.
 15. Javelin, in particular to be employed in agymnasium hall, essentially comprising a shaft, wherein the point of thejavelin is formed blunt and which shaft exhibits a handle in theneighborhood on the center of gravity, characterized in that the javelinis substantially adapted to a competition javelin, and that the shaft(2) is formed as a core (6, 6′) wherein the core (6, 6′) is jacketed bya jacket (7, 7′) made of an elastic material, and that said core (6, 6′)is formed as a cylindrical hollow body, and that the point (3, 3′) ofthe javelin is connected disengageably to the shaft (2).
 16. Javelinaccording to claim 15, characterized in that the jacket (7,7,9,9′, 11)is made out of a plastic material.
 17. Javelin according to claim 15,characterized in that the jacket (7,7′, 9,9′, 11) is formed out of afoaming material.
 18. Javelin according to claim 15 characterized inthat the core (6, 6′) is formed as a wooden core.
 19. Javelin accordingto claim 15 characterized in that the core (6,6′) is made of a glassfiber reinforced plastic.
 20. Javelin according to 15, characterized inthat the point (3,3′,3″) of the javelin is formed out of an elasticmaterial at the free end (14) of the point (3,3′,3″) of the javelindisposed relatively remote to the shaft.
 21. Javelin according to claim14, characterized in that the jacket (7,7′) is disposed between thepoint (3,3″) of the javelin and the end (5) of the javelin.
 22. Javelinaccording to claim 15 characterized in that the shaft (2) is jacketed bya front jacket (9,9′) in a front region (8) comprising the point(3,3′,3″) of the javelin.
 23. Javelin according to claim 15characterized in that the shaft (2) is jacketed in a rear region (10)comprising an end (5) of the javelin disposed relatively remote to thepoint (3,3′, 3″) of the javelin with a rear jacket (11).
 24. Javelinaccording to 15, characterized in that core (6,6′) is formed as aplastic core.
 25. Javelin according to claim 15, characterized in thatthe jacket (7,7′, 9,9′, 11) is removable.
 26. Javelin according to claim15, characterized in that the core is formed as a metal core. 27.Javelin, in particular to be employed in a gymnasium hall, essentiallycomprising a shaft, wherein the point of the javelin is formed blunt andwhich shaft exhibits a handle in the neighborhood on the center ofgravity, characterized in that the javelin is substantially adapted to acompetition javelin, and that the shaft (2) is formed as a core (6, 6′)wherein the core (6, 6′) is jacketed by a jacket (7, 7′) made of anelastic material, and that said core (6, 6′) is formed as a cylindricalhollow body, and that the point (3, 3′) of the javelin is connecteddisengageably and screwable to the shaft (2).
 28. Javelin, in particularto be employed in a gymnasium hall, essentially comprising a shaft,wherein the point of the javelin is formed blunt and which shaftexhibits a handle in the neighborhood on the center of gravity,characterized in that the javelin is substantially adapted to acompetition javelin, and that the shaft (2) is formed as a core (6, 6′)wherein the core (6, 6′) is jacketed by a jacket (7, 7′) made of anelastic material, and that said core (6, 6′) is formed as a cylindricalhollow body, and that the point (3, 3′) of the javelin is connecteddisengageably and screwable to the shaft (2), and that the end (5) ofthe javelin is connected disengageably and screwable to the shaft (2).29. Javelin according to claim 28, characterized in that the end (5) ofthe javelin at its free end (15) disposed relatively remote to the shaftis formed out of an elastic material.